159689 has 8 divisors (see below), whose sum is σ = 171072. Its totient is φ = 148720.

The previous prime is 159683. The next prime is 159697. The reversal of 159689 is 986951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159689 - 2⁴ = 159673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154 + ... + 1284.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2¹⁵⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

159689 is a deficient number, since it is larger than the sum of its proper divisors (11383).

159689 is a wasteful number, since it uses less digits than its factorization.

159689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207.

The product of its digits is 19440, while the sum is 38.

The square root of 159689 is about 399.6110609080. The cubic root of 159689 is about 54.2531551889.

It can be divided in two parts, 159 and 689, that added together give a palindrome (848).

The spelling of 159689 in words is "one hundred fifty-nine thousand, six hundred eighty-nine".